A message from the datacentre when we inquired as to the reason of the outage:

we had an unexpected power outage on the whole city, which damaged our UPS. We are currently powering over a bypass and looking for a solution.
Sorry for the inconveniences, we hope that the servers are working fine, if not, please feel free to perform a fsck of the drives and try to boot again.

We are bringing the servers back online and all VPN servers should now be back online.

Colossus (a Seedbox server) is still down and we’re currently looking into the cause of this problem.